Variable-capacity pump



'Au 9 192 f v g 7 F. w. SCHUBERT VARIABLE cAPAc1Ty-PUMP Filed June 2.1. 192s Paemea Aeg, 9,' 192-1.

j `13151111431)f ,s'rlvlrs EOBD, ENGLAND.

.Application led June il, 1 926, Serial No.

This invention relates to thel manufacture of artificial silk and in particular to improvements in pumps lfor use in fluid pumps for.` supplying cuprammonia cellulose solu- 5 tions to spinning machines or to the spin` ning nozzles thereof, the chief object being to rovide a pump wherein no Igas or air poc etsare afforded in the pump and great accuracy vis ensured.

According to the invention we`employa pump of the type comprising a Acasing having an'inlet and an oppcsitely situated out.- let and within which is provided a cylindrical rotary member having a series of radial slots adapted to carry series of radially disposed members slidably mounted therein, the said slidable members being provided with laterally projecting pins or runners adapted to engage eccentric tracks or grooves A formedV in the side cover plates of the casing so as to `cause the said series of slidably' mounted members to be moved inwardly to- .ward the centre and then outwardly toward the periphery ofthe rotary member during lll each complete revolution thereof.

In `order that the invention may be clearly .understood rand ,readily carried into effect, the same will now be more fully described with reference to and by aid of the accom- I 3o panying drawings: Wheremz- Figure 1 isa side elevation of a fluid pump of the type employed'in accordance Referring to the drawings, 1 is the pump casing having an inlet 2- and lan oppositely situated outlet 3 'and within the casing 1 is provided a cyhndrical rotary member 4 havinga series of radial slots-or recesses 5 v which lhave a series of radially disposed members 6 lslid'ably mounted therein, said slidably mounted members '6 being provided with laterallyl projecting pins'7 which carry runners 8 ada ted to enga e eccentric tracks or grooves 9 ormed in-si e cover plates 10 Qtlle casing 1 so ts to cause the said slidwith the invention, a portion of4 the side PATENT OFFICE( :mIEDBIcE WILHELM SCHUBERT, or APPERLEY` BRIDGE, NEAR BRADFORD, ENG- LAND, AssIGNoa lro BaYsILxA, Lzuurrnnor'v ArrEELEY .DEIDGE NEAR :sist'AD-l VARIABLE-CAPACITY PUMP.

117,534, and in Great :Britain July 2, 1,925.

viscousliquid to the latter from the main feed pipe (not shown), to which the pump vis connected. The rotary member 4 is formed with an integral central spindle or shaft 11 by which itis mounted in bearings 12 in 'the side cover plates 10 of the casing 1 and said rotary member 4 is adapted to be driven through the medium of a toothed wheel 13 secured on said spindle or shaft 11, the speed of rotation being in accordance with the desired rate of flow of liquid from the outlet.

The radial movement of the slidably mounted members 6, during the revolution of their rotary carrying member 4, has the effeet ot drawing the viscous liquid,.which is fed under pressure into the pump, into the vvradial slotsor recesses 5, of the rotary member 4 as each slidably mounted member 6 passes the inlet orifice 2 and then expelling the viscous liquid from said slots or recesses 5, as they pass the outlet 3. l

The side cover plates 10 are rotatably mounted within flange. rings 131 on the sides of the pump casing 1, and are each provided vwith pivotally mounted links' 14 secu-red t0- gether at. their outer extremities by a crosslhead 15 carrying an adjustable screwed spindle 16 adapted `bymeans of fixed collars 17 thereon to engage a fixed depending member 18 secured to the upper part ofthe casing; the arrangement being such that, by rotation of the screwed spindle 16, the side cover plates 10 may, through the cross-head 15 and links 14, be rotated through a small angle in either direction so as to vary the position of maximum throw of the eccentric tracks 9 in susV relation to the outlet 3, thereby enabling lline adjustment or regulation of the delivery to be made.

v Lclaimz- 1. vIn apump of the character described,

.casing as the rotor turns, a piston in each of said chambers having a stem extending radially of the rotor, cam plates arranged at opposite sides ofthe rotor and cooperating with the piston plungers to eect recip- 'rocation of the pistons as-the rotor turns, and means for rotatively adjusting said cam plates about the axis of the rotor, for the purpose described. n

2. In a pump of the character described, the combination of a casing provided with inletand outlet openings, a rotor within the casing having a plurality of chambers adapted to succesively come into communication;

with the inlet and outlet openings of the cas'- v ing as the rotor turns, a piston in each of said chambers having a stem extending radigrooves,

ally of the rotor, plates arranged at opposite sides of the rotor and provided in their opposed faces with parallel cam shaped lateral projections on the piston stems extendin the pistons wil? be reciprocated as the rotor turns, and means for rotatively adjusting said plates about the axis of the rotor, for the purpose described. l f

3. In a pump of the character described, the combination of a casing provi inlet and outlet openings, a rotor within the casing having a plurality of chambers adapted to successively come into communication with the inlet and outlet openings of the 1 into said grooves, whereby ded with A casing as the rotor` turns, a piston in each of said chambers having a stem extending radially of the rotor, cam plates arranged at opposite sides of the rotor and cooperating with the piston plungers to efect reciprocation of the pistons as the rotor turns, parallel links each connected to one of the camplates, a cross head connecting said links, and a screw projecting from the casing and engaging the cross head, whereby by turning the screw the-cam plates may be bodily adjusted rotatively about the axis of the rotor, for

the purpose described.

FRIEDRICH WILHELM SCHUBERT. I 

